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goblog.go
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goblog.go
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package main
//this implements https://jsonapi.org/format/ as best as possible
import (
"github.com/joho/godotenv"
"goblog/admin"
"goblog/auth"
"goblog/blog"
"goblog/tools"
"goblog/wizard"
"log"
"os"
"strconv"
"syscall"
"github.com/fvbock/endless"
"github.com/gin-contrib/sessions"
"github.com/gin-contrib/sessions/cookie"
"github.com/gin-contrib/static"
"github.com/gin-gonic/gin"
"gorm.io/driver/mysql"
"gorm.io/driver/sqlite"
"gorm.io/gorm"
)
// Version of the code generated from git describe
var Version = "development"
func setup_wizard() {
_wizard := wizard.New(Version)
router := gin.Default()
router.Use(CORS())
store := cookie.NewStore([]byte("changelater"))
router.Use(sessions.Sessions("www.jasonernst.com", store))
router.LoadHTMLGlob("templates/*.html")
router.GET("/", _wizard.Landing)
router.GET("/wizard", _wizard.SaveToken)
router.Use(static.Serve("/", static.LocalFile("www", false)))
router.GET("/login", _wizard.LoginCode)
// router.Run("0.0.0.0:7000")
server := endless.NewServer(":7000", router)
server.BeforeBegin = func(add string) {
log.Printf("Actual pid is %d", syscall.Getpid())
pid := syscall.Getpid()
f, err := os.Create("/tmp/goblog.pid")
if err != nil {
log.Println("Unable to create /tmp/goblog.pid")
return
}
_, err = f.WriteString(strconv.Itoa(pid))
if err != nil {
log.Println("Unable to write to /tmp/goblog.pid")
return
}
err = f.Close()
if err != nil {
log.Println("Unable to close /tmp/goblog.pid")
return
}
}
server.ListenAndServe()
}
func main() {
log.Println("Starting blog version: ", Version)
err := godotenv.Load(".env")
if err != nil {
setup_wizard()
err := godotenv.Load(".env")
if err != nil {
log.Println("Failed to read the .env file after the wizard, can't proceed")
return
}
}
database := os.Getenv("database")
if database != "mysql" && database != "sqlite" {
log.Println("Database type: " + database + " is not valid. Expecting `mysql` or `sqlite`")
return
}
var db *gorm.DB
if database == "sqlite" {
db_file := os.Getenv("sqlite_db")
db, err = gorm.Open(sqlite.Open(db_file), &gorm.Config{
DisableForeignKeyConstraintWhenMigrating: true,
})
if err != nil {
panic("failed to open sqlite db: " + db_file)
}
log.Println("opened sqlite db")
} else {
user := os.Getenv("MYSQL_USER")
pass := os.Getenv("MYSQL_PASSWORD")
dbname := os.Getenv("MYSQL_DATABASE")
dsn := user + ":" + pass + "@tcp(db:3306)/" + dbname + "?charset=utf8mb4&parseTime=True&loc=Local"
db, err = gorm.Open(mysql.Open(dsn), &gorm.Config{})
if err != nil {
panic("failed to connect to mysql db")
}
log.Println("connected to mysql db")
}
tools.Migrate(db)
router := gin.Default()
router.Use(CORS())
store := cookie.NewStore([]byte("changelater"))
router.Use(sessions.Sessions("www.jasonernst.com", store))
_auth := auth.New(db, Version)
_blog := blog.New(db, &_auth, Version)
_admin := admin.New(db, &_auth, _blog, Version)
// todo: restrict cors properly to same domain: https://github.com/rs/cors
// this lets us get a request from localhost:8000 without the web browser
// bitching about it
//router.Use(cors.New(cors.Config{
// AllowOrigins: []string{"http://localhost", "http://localhost:8000"},
// AllowMethods: []string{"GET", "POST", "PATCH", "OPTIONS", "DELETE"},
// ExposeHeaders: []string{"Content-Length"},
// AllowCredentials: true,
// AllowAllOrigins: false,
// AllowOriginFunc: func(origin string) bool { return true },
//}))
//all of this is the json api
router.MaxMultipartMemory = 50 << 20
router.POST("/api/login", _auth.LoginPostHandler)
router.POST("/api/v1/posts", _admin.CreatePost)
router.POST("/api/v1/upload", _admin.UploadFile)
router.PATCH("/api/v1/posts", _admin.UpdatePost)
router.PATCH("/api/v1/publish/:id", _admin.PublishPost)
router.PATCH("/api/v1/draft/:id", _admin.DraftPost)
router.DELETE("/api/v1/posts", _admin.DeletePost)
router.GET("/api/v1/posts/:yyyy/:mm/:dd/:slug", _blog.GetPost)
router.GET("/api/v1/posts", _blog.ListPosts)
//all of this serves html full pages, but re-uses much of the logic of
//the json API. The json API is tested more easily. Also javascript can
//served in the html can be used to create and update posts by directly
//working with the json API.
//todo - make the template folder configurable by command line arg
//so that people can pass in their own template folder instead of the default
//https://github.com/gin-gonic/gin/issues/464
router.LoadHTMLGlob("templates/*.html")
//if we use true here - it will override the home route and just show files
router.Use(static.Serve("/", static.LocalFile("www", false)))
router.GET("/", _blog.Home)
router.GET("/index.php", _blog.Home)
router.GET("/posts/:yyyy/:mm/:dd/:slug", _blog.Post)
// lets posts work with our without the word posts in front
router.GET("/:yyyy/:mm/:dd/:slug", _blog.Post)
router.GET("/admin/posts/:yyyy/:mm/:dd/:slug", _admin.Post)
router.GET("/tag/:name", _blog.Tag)
router.GET("/login", _blog.Login)
router.GET("/logout", _blog.Logout)
//todo: register a template mapping to a "page type"
router.GET("/posts", _blog.Posts)
router.GET("/blog", _blog.Posts)
router.GET("/tags", _blog.Tags)
router.GET("/presentations", _blog.Speaking)
router.GET("/research", _blog.Research)
router.GET("/projects", _blog.Projects)
router.GET("/about", _blog.About)
router.GET("/sitemap.xml", _blog.Sitemap)
router.GET("/archives", _blog.Archives)
// lets old WordPress stuff stored at wp-content/uploads work
router.Use(static.Serve("/wp-content", static.LocalFile("www", false)))
router.GET("/admin", _admin.Admin)
router.GET("/admin/dashboard", _admin.AdminDashboard)
router.GET("/admin/posts", _admin.AdminPosts)
router.GET("/admin/newpost", _admin.AdminNewPost)
router.GET("/admin/settings", _admin.AdminSettings)
router.NoRoute(_blog.NoRoute)
err = endless.ListenAndServe(":7000", router)
if err != nil {
log.Println("Error running goblog server: " + err.Error())
}
}
func CORS() gin.HandlerFunc {
return func(c *gin.Context) {
c.Writer.Header().Set("Access-Control-Allow-Origin", "*")
c.Writer.Header().Set("Access-Control-Allow-Credentials", "true")
c.Writer.Header().Set("Access-Control-Allow-Headers", "*")
c.Writer.Header().Set("Access-Control-Allow-Methods", "GET, HEAD, POST, PUT, DELETE, OPTIONS, PATCH")
c.Next()
}
}